Micrometer-calipers.



No. 874,197. PATENTE) DEcfl'v, 19o?.

' E. HEYM. v

MIGROMETBR oALlPERs.

APPLICATION FILED HOV. 22| 1906.

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f. 6?@ of/mmza/L UNITED sTATns PATENT i OFFICE.

ERNEST-HEYM, OF PHILADELPHIA, PENNSYLVANIA.

mcaozmrnmamrnas.

T o all whom it may concern." y

Be it known that I, ERNEST HEYM, a subject of the Emperor of Germany, residing in the city and county of Philadelphia, State of Pennsylvania, have invented a new and useful Micrometer-Calipers, of which the following is a specification. l

My lnvention relates to a new and useful` micrometer caliper and consists ofv means whereby lnslde and outside measurements may be taken.

It further consists of ak novel lock for the parts. l

It Afurther consists of novel means for adjusting the parts. p vIt further consists of novel details of construction, all as will bel hereinafter fully set forth. y y l Figure 1 represents a perspective view of a micrometer caliper, embodying my invention. Fig. 2 represents a longitudinal sectional view thereof with the parts in diierent positions from-that shown in Fig. 1. Fig. 3 represents a perspective view of the 'locking means. Fig. 4 represents a front elevation of the lock employed.

Similar numerals of reference indicate corp res Aonding parts in the figures.

s my invention is constructed by means ofv a single scale having two lines for taking readings measurements can be made of the inside or outside by a single instrument and a correct readings thereof t and I provide further a lock for the jaws when it is necessary to make a plurality of l measurements of the same reading.

' employed for carrying out the invention with I have shown in'the drawings one form of carrying out my invention, butit will be un- I derstood'fthat I do not desire to be limited in every instance to what I have shown and de scribed, as other instrumentalitles may be the same results.

1 designates a micrometer cahrir having a body 2 -with a oke 3, upon W ch I ma place any suitab e notations or scales, whic ma be useful in making calculations and which I have not shown in the drawings, as

'anysuitable matter may be placed thereon.

In a suitable portion of said body I provide a -slot 4 and one end of said body is open. 5

designates a tubular, extension on said body l i which may be integral therewith or suitably mounted thereto, the inner wall of said extension-l1aving the threads 6 thereon at a suitable point and being split as at 7.

Specification of Letters Patent.

Application lod November 22, 1906. Serial No. 344.530.

en to any ineness Patented Dec. 17, 1907;

8 designates an exteriorly and interiorly threade and is adapted to enga e with the threads 6 on the extension 5, sai bushing being split at 9 and being adapted to receive on its split end the threaded ring 10 which is exteriorly tapered, said ring serving by proper manipulation to suitably open or close the split end of said bushing.

bushing which is exteriorly tapered 11 designates a 'sleeve which fits over the may form part thereof.,` a spindle 12 which is threaded to engage with the interior threads of the bushing 8, it being understood that by .the rotation of sleeve 11 the spindle 12 is moved inwardly or outwardly and carries with it Vthe sleeve 11 andthat by the proper manipulation of the said ring 10 the inner threads on the bushing are caused Ito properlyengage with the spindle 12 and prevent any improper `sidewise movements. Carried by the s indle or forming part thereof is the threade pin 13 between which-and said A's indle is the neck 14 which is free from t eads. v .i l5 designates the movable aw of the m1- -crometer caliper, which is provided with a suitable Vangular ortion 16 adapted to fit and move in the s ot 4 of the easing, said jaw having a tubular portion 17 which 1s adapted to fit the bore of the body 2, it being noted that said portion. is passed into the bore from extension 5 and to which is connected, or j the open end of the body and at the same y time the jaw enters the slot 4. The end of the tubular portion is provided with a suitable openi 18 formed by the inturned.

flange 19, w ich also forms outside and in-y sidefshoulders, and through said opening the pin 13 is passed, so that the end of the s indle 12 bears against the outside of the ange,

While the neck 14 is seated inthe opening or' bore18.

20 designates 'an interiorly threaded bushing which fits loosely within the tubular por tion 17 in the jaw` 15 and the threads of which are eng ed by the threads on the pin 13 so that it 1s eld tightly thereon, and said together, so that it will be seenthat 'as the spindle is moved inwardly' and outwardly .the tubular portion 17 and jaw 15 will move therewith.

22 designates the stationary jaw which iiiay be adjusted in the body and which is provided with the angular portion 23 which is situated in the slot 4 of the body, the said jaw 22 having a tubular portion 24 which is adapted to fit the bore of the body and the end of the latter being provided with threads which are adapted to be engaged by the threads upon a cap 25, which latter bears against the end of the tubular portion 24 and the jaw 22 and between which and the set screws 26 the said jaw is adjusted and held in said adjusted position, it being noted that the set screws 26 pass through the body 2 and are provided with the conical portions 27 and that there is a scre'w 26 on each side of the body so that the jaw 22 will be properly held, In order to adjust said jaw 22 to the proper position, -it is rst necessary to bring the 1movable jaw 15 in contact therewith by rotating the sleeve 11. When the said jaws are in contact it is necessary that the 0 of the scale 27 X on the sleeve 11, will register with the 0 on the line 281015 the scale on the ,extension 5, said line 28 of the scale being adapted to give readings for the outside measurement, while a second line 29 of the scale on said extension 5 serves the similar purpose for inside measurements. If it is found that the jaws are not properly situated, when the scales are in proper register, the said jaw 22 can be adjusted, for exam le, if it is necessary to move the same inwardly by slightly unscrewing the screws 26 and' turning the cap 25, the saidjaw 22 is moved slightly inwardlythis movement being permitted by the conical face 27 of the screws. This adjustment can be continued until the jaws are in proper position. The movable jaw can also be adjusted in order that the A two jaws willdproperly measure inside measurements, an this adjustment canbe made by screwin the bushing 20 slightly farther e pin 13 andthen locking the same together again by the screw 2 1, it being understood that by this means the position of the movable jaw with respect to the sleeve j 11 can be changed. 1f desired in order to be positive that the jaws are properly set, I may employ agage, such as a rin the inside measurement of which is one alf an inch, then by inserting the jaws-within the ring,

the 0 of the scale 27 X should register with the 5 on the-line 29 of the scale ifthe aws are correctly set u if the said 0 is slightly to one side orthe ot er of the 5, thejaws are not correctly set and, it willbe necessary to adjust the movable jaw as described, until the proper register occurs ,vwhen the parts will be properly set. As it often occurs that it is necessary to make a number of measurements of the same record, I have provided a lock for movable jaw 15 which consists ot a split ring 30 provided with lugs 31 over which I place a plate 32 and around said ring and plates 32 I place an internal cam ring 33. The split ring 30 is 'provided Awith the lug 34 which is adapted to enter a recess 35 in thel body 2, it being understood that a suitable cut away portion 36 is made in the body 2 for the reception of the split ring 30 and internal cani ring 33 and by reason of the engagement of the lug 34 in the recess 35, rotation of the split ring is prevented, but that when the outer internal cani ring 33 is rotated the cam face thereon will movel inwardly the plate 32 which will cause the split ring 31 to be coin ressed and causes the saine to bite the cylindrical portionl 17 of the aw 15 which passes through said rings, and prevent accidental movement thereof.

It will be understood from the construction above described, that by reason of the single scale having ltwo reading lines, on the cylindrical extension 5, inside and outside measurements can be made with the same micrometer caliper, it only being necessary to adjust the jaws 15 and 22 properly in order that the scales register correctly, it being understood that the 0 on the scale 27X must register with the O on the line 28 of the scale and from this line, readings of the outside measurements are made. When inside measurements are to be made, the 0 isj caused to register with the iirst division on the line -29 of ,the scale for inside measurements, and readings for said inside measurements, must be taken entirely on the lower line of the scale, it being noted that the 'movement of the 0 line in the scale 27). from the outer to the inner scale is permitted, by reason of the slight space left between the bushing 20 and the flan e 19 on the extension 17.

It willbe understood that the inside readings are taken in the usual manner but that the two reading lines which I haveprovided on my lines are provided, by reason of the lost motion which must occur in the gage. b reason of the slight space which must be leit in the internal mechanism, as otherwise if the s ace were not there the parts would be so tight that they would not be operated. It will be seen therefore that when the jaws are in contact and the 0 on the scale 27 is in register withy the 0 on the line 28 ofv the scale that as soon as the sleeve is turned there will be a slight movement permitted before the l.

for the inside measurements are, as beforel stated taken on the line 29.

The operation of the device is apparent said movable jaw having a suitable scale` thereon which is adapted to register at the proper time with either of said reading lines, whereby inside o rloutside measurements ymay be taken.

2.` Ina device .of the character described,

a body portion, a bushing in one end thereof,

a sleeve sliding on said body,` a s indle in threaded engagement with said bus ing and carried by said sleeve, a movable jaw actuated by said spindle' and connected therewith, a stationary jaw mounted in said body, and means for adjusting said stationary jaw to any degree oi ineness.

3. In a device of the character described, a body ortion, a bushing in one end thereof, a spind e in threaded engagement with .said bushing, a movable jaw actuated by said spindle and connected therewith, a stationary jaw mounted in said body, andmeans for adjusting said stationary jaw to any degree of fineness.

4. In a device of the character described, a body, a stationar jaw, a spindle in threaded engagement with said body, a-pin carried by said spindle, a movable -jaw carried by said body, and a bushing in engagement with said pin and serving to connect the jaw withl said s indle.

5. n a device'of the character described, i

. a body, a stationary jaw, a spindle in threaded engagement with said body, a pin carried by said spindle, a movable jaw mounted in said body, a bushing in engagement with said pin and serving to connect the jaw Withsaid spindle and means for locking said pin and bushing together.

6. In a device of the character described, a body portion, a stationary jaw, means for adjusting said stationary jaw, a movable jaw having an extension, a spindle having a portion thereof engaging said extension and having a portion projecting within saidextension and adjustable means engaging with said spindle and situated within said extension for holding the parts in proper position.

7'. .In a device of the character described, a body, a statlonary jaw, a movable jaw,

' means for actuating Vthe same, a split `ring through which said jaw passes, andan internal cam collar adapte-d to suitably compressV 'said ring. j

8. In a device of. the character described, a movable jaw, means for actuating the ,said bod same, a stationary jaw, a cap bearing upon said jaw on one side, and adjustable stops against which said stationary jaw abuts.

9. In a device of the character described, a movable jaw, means for actuating the same, a vstationary jaw, a cap bearing upon said jaw, and screws having conical polnts and against which said'stationary jaw abuts whereby the position of the same may be adjusted. l

10. In a device of the character described,

ya body, a stationary jaw, means for adjusting erewith for moving the same for moving the same in one direction and adapted to be adjusted for outside measurements and means for moving the same in the opp'osite direction and adapted to ,be ad- 'usted for inside measurements said-means eing situated within said body.

12. In a device of the character described,

a hollow body, a stationary jaw, a movabl aw having a tubular extension, a spindle aving 'a portion thereof engaging said ex- 1 tension and having a portion proj ectlng with- 'in said extension and means engaging with said spindle and situated within sald tubular extension for holding the parts in proper position.

. 13. In a device of the character described, i

a body, a stationary jaw, a spindle in threaded engagement with said body, a movable jaw having a portion thereof situated within )said body and engaged bysaid spindle for 4moving the jaw in one direction and means actuated by said spindle and engaging with -said jaw for moving the latter inthe opio site direction, a'slight play being .provi between the points of engagements of said jaw and said spindle and means.

14. In a device of the character described, a body, a stationary jaw, a spindle in threaded engagement Withsaid body, a movable jaw having a ortion thereof situated an engaged by said spindle for moving t e jaw in one direction, and a bushing actuated by said spindle and engaging sald movable aw for actuatingV the latter in the op osite dlrection.

15. n a device of the character described,

a hollow'body, a stationary jaw, a movable 'aw having a tubular extension, a spindle aving a portion thereof engaging said eX- tension and having a portion projecting within said extension and-adjustable means enng with saidA spindle and situated within said tubular extension for holding the parts in proper position.

16. In a device of the character described, alhollow body, a stationary (jaw, a movable jaw guided in said lbody an having an eX- tension movable therein, a spindle in threaded engagement with said body and movable therein, a projection on said spindle adapted to be seated within the extension on said movable jaw and means for holding the parts in proper position.

17. In a device of the character described,

I a hollow body, a stationary jaw, a movable jaw guided in said body, and having an eX- tension movable therein, a spindle in threaded engagement with said body and movable therein, a projection on said spindle adapted to be seated within the extension on' said movable jaw and a bushing for holding the parts in proper position.

18. In a device ofA the character described, a hollow body, a stationary 'aw, a movable jaw guided in said body and having an extension .movable therein, a spindle in threaded engagement with said body and movable therein, a projection on said spindle adapted to be seated within4 the extension on said movable jaw, a bushing for holding the parts in proper position and a nut for holding said bushin in position.

19. n'a device of the character described, a body, a stationary jaw, a spindle in threaded engagement with said body, a movable jaw having a portion thereof engaged by said spindle for moving the same in one direction,

a bushing actuated by' said spindle and enaging said movable jaw for actuating the atter in the opposite direction and means for lockin said bushing in position.

20. n a device of the character described, a body, a movable jaw, means for actuating the same, a stationary jaw, a cap adapted to hold said stationary jaw in engagement with said body, and screws having conical points projecting from opposite sides of said bodyanda ainst which said stationary jaw abuts, wherey the same is held in position between said cap and said screws and may be adjusted therebetween.

21. In a device of the character described, a body, a stationary jaw, a movable jaw, separate meanssituated within s'aid body for adjusting said jaws, asingle scale having two reading lines on the body and a rotative sleeve connected with said movable jaw and having a scale thereon which is adapted to register at the .proper time with either of-said reading lines, whereby inside or outside measurements may be taken.

22. In a device of the character described, a body, a stationary jaw, a movable jaw having an extension, a'spindle having a portion thereof engaging said extension upon one side and adjustable means situated within said extension and engaging the s indle upon the opposite side for holding t e parts in proper position.

23. In a device of the character described, a hollow body, a stationary jaw, a movable jaw having an extension, aspindle having a portion thereof engaging said extension, adjustable means engaging with said spindle and with said-extension for holding the parts in proper position, a sleeve connected with said spindle and rotative about said body and a-single scale having two reading lines with which the scale carried bysaid sleeve is adapted to register.

v ERNEST IIEYM.

Witnesses:-

WILL. M. SEITZINGER,

AUGUST PIOCH. 

